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目的：研究神经重复电刺激检查对神经肌肉接头病变的诊断价值。方法：用Ｎｅｕｒｏｍａｔｉｃ型２０００Ｃ及Ｋｅｙｐｏｉｎｔ型肌电图／诱发电位仪，检查９３例神经科肌无力患者１８８条神经的重复电刺激，按临床诊断分为重症肌无力（ＭＧ）组（ｎ＝５９）和非重症肌无力（ｎＭＧ）组（ｎ＝３４）。结果：ＭＧ组神经重复电刺激诱发的波幅衰减阳性率（６４％）显著高于ｎＭＧ组（８８％）（Ｐ＜０００５）。９７５％的ＭＧ患者在低频刺激时即可获得阳性结果，波幅衰减最大的刺激频率为５Ｈｚ而非３Ｈｚ。测量波面积对ＭＧ的诊断价值优于测定波幅。结论：神经重复电刺激检查在神经肌肉接头病变的诊断中具有重要价值
Objective: To study the diagnostic value of neuro-repetitive electrical stimulation on neuromuscular junction lesions. Methods: Neuromatic 2000C and Keypoint EMG were used to examine the repeated electrical stimulation of 188 neurons in 93 patients with neurological weakness. According to clinical diagnosis, they were divided into MG group (n = 59) And non-myasthenia gravis (nMG) group (n = 34). Results: The positive rate of amplitude attenuation (64%) induced by repeated nerve stimulation in MG group was significantly higher than that in nMG group (88%) (P <0005). 97.5% of patients with MG can get positive results when stimulated by low frequency. The stimulus with the largest amplitude attenuation is 5Hz instead of 3Hz. The diagnostic value of the measured wave area for MG is superior to the measured amplitude. CONCLUSIONS: Nerve repetitive electrical stimulation testing is of great value in the diagnosis of neuromuscular junction lesions